Help! Vaporizers & COPD (mild emphysema)

HI all
I am new to the forum and am hoping you can help me out.
I have COPD (mild emphysema) a lung disease from Smoking Cigarettes.
I am off of the cigs 5 years now. So sadly smoking the bud is out for me.
If you have any thoughts on the safety of vaporizing and CPOD (lung disease)
or other options that mite work for me for me, please let me know.
I have read the studies on vaporizing and they do not address lung disease & COPD.
That state that vapor can be any irritant and contain microscopic particles.
So you can see my problem.
I would love to get stoned but am not looking to hurt my lung doing it.
I was thinking maybe a vaporizer and a water filter is the key?
Any Thoughts?
Thanks
dogblue2